About the future development of China's silicone roller industry

Up to now, there are about 400 rubber roller manufacturers in 400 country, but most of them are small workshop-style processing factories in various places. These factories are small in scale, single in product and poor in technology. They are characterized by low price and convenient in supply. Printing rubber roller products can only be matched and renovated for low-grade printing machines, with an output value of only several million yuan. Therefore, the rubber roller industry in our country is still in the backward technical level and production level. However, although China's rubber roller industry still has a great development trend, especially the rise of the printing industry, has accelerated the development of the rubber roller industry. Many printing companies need a large number of rubber rollers to produce operations. Let's take a look at the information about rubber rollers.

1. thermal aging silicone roller heating will accelerate the desulfurization, resulting in thermal aging, so that the surface sticky, soft, and even cracks into orange. At this time, the rubber roller can only be replaced.

2. Colloidal block-off ink dries early in the process of colloidal surface transfer. The dried ink film decreases its ductility. In the process of rolling, the colloidal surface will be destroyed with the cracking of the ink film, thus causing colloidal block-off. The main reason for the early drying of the ink is that the desiccant is added to the ink, the ink with faster drying is printed, and the ink roller is not cleaned as required, so that the ink is dried on the rubber roller during long-term use. The temperature in the process of rubber roller is too high, the surface is easy to carbonize, and the short-term printing will appear the phenomenon of block. Overweight printing pressure adjustment, when the machine is idling, if the idling protection measures are improper or not in time, it will also accelerate the damage of the roller surface. The solution to this problem: the rubber roller that has dropped the block can be replaced to solve the printing failure caused by it.

3. Surface glazing In the printing process, the organic and inorganic substances in the ink binder, the hydrophilic colloid in the fountain solution, the shedding filler in the paper, and the coating will form a layer of "bright film" on the surface of the ink roller, making the surface of the ink roller vitrified and the ink transfer performance decreased.

4. The surface of the rubber roller produces crystalline compounds.

5. Roller expansion: In addition to the cause of heat, the main reason is the use of improper cleaning agent, making the colloid swelling. Solution: Select the appropriate cleaning agent. (often make the roller swelling of organic solvents: MEK methyl acetaldehyde ketone, trichloroethylene, acetone, ring methane, banana water; non swelling organic solvents: alcohol, kerosene, light oil, roller cleaning agent).

6. Circumferential striations: In addition to the crystalline compound will cause similar circumferential striations, the dry ink skin on the hard ink roller of the silicone roller, and the garbage will scratch the surface of the soft rubber roller during operation to form circumferential striations. At this time, you must use the dead ink remover to remove the dry ink skin.

7. Ink staining of water bucket roller: The surface of chrome roller can fully isolate the ink after absorbing the fountain solution. However, excessive fountain solution and excessive acidity of the fountain solution will increase the emulsification of the ink. The emulsified ink will return to the water bucket roller along the return water path. The absorption of ink on the water bucket roller will cause poor dampening and small local water failures. The ink on the bucket roller must be removed in time. At the same time adjust the size of the fountain solution and its composition.